Hi. a new question born !

my new app its a book.
but i need a fullscreen.jpg at the start: (already have)


how can I start My app with full screen (cover book) , and with a simple button

when a user press the button jump to MyViewController
to start reading the book.

i know how to do it with UIView, but not with a UIWindow and MyViewController
here is the code I use for UIView:

[window addSubview:viewController.view];
[window makeKeyAndVisible];
[window addSubview:vistainicio];

and the button action:

- (IBAction)start: (id)sender {
[vistainicio removeFromSuperview];
[window addSubview: vistabook];}

thanks for your help.!